Features:brand new and high qualityFull aluminum alloy material, well protections for motherboard.The upper surfaces of the shell is designed with multiple grooves, which is more conducive to the distribution of hot air.The CPU and other module positions are provided with silicone thermal pads to make heat dissipation more efficient.The cooling fan provide better passive cooling.Compatible with OrangePi 4 LTS. (OrangePi 4 LTS is not included)Specifications:Material:ABS+MetalColor:BlackSize:Approx.91x56x23mm3.58x2.2x0.9inchesNote:1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order.2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.Package includes:1 Set Cooling Case